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Central air-conditioner energy storage characteristic-based power market optimal dispatching strategy

A central air-conditioning and optimal scheduling technology, applied in data processing applications, forecasting, computing, etc., can solve problems such as poor economy and high cost

Inactive Publication Date: 2015-12-02
SOUTHEAST UNIV
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Problems solved by technology

At the same time, a large number of new energy sources such as wind energy and solar energy are connected to the power grid and the concept of the energy Internet has put forward higher and higher requirements for energy storage components. However, the cost of traditional energy storage components (such as batteries) is often relatively high and economical. Poor performance, air-conditioning load provides another possibility for energy storage components in the electricity market

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  • Central air-conditioner energy storage characteristic-based power market optimal dispatching strategy
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  • Central air-conditioner energy storage characteristic-based power market optimal dispatching strategy

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] A power market optimal dispatch strategy based on the characteristics of central air-conditioning energy storage, including the following steps:

[0033] (1) According to the thermodynamic model of the building to which the central air conditioner belongs, the battery model is established:

[0034] B={O,SOE,P d ,C max ,D max}(1)

[0035] In the formula: B represents the parameter set of the battery model, O represents the energy storage capacity, SOE represents the state of charge, P d Indicates the float charging power, C max Indicates the maximum charging power, D max Indicates the maximum discharge power;

[0036] (2) The load aggregator predicts the clearing price and load for each period of the next day, and arranges the purchase of electricity for each period of the next day through the charge and discharge control of the battery model, so that the ...

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Abstract

The invention discloses a central air-conditioner energy storage characteristic-based power market optimal dispatching strategy. According to the power market optimal dispatching strategy, a storage battery model is established according to the thermodynamic model of a building to which a central air conditioner belongs; in the day-ahead market, a load aggregator performs electricity purchase arrangement according to clearing electricity price or load prediction condition of each time section of the next day, so that minimum day-ahead market electricity purchase cost of the load aggregator can be realized; since errors exist in load prediction of the load aggregator, difference between actual electricity purchase quantity and planned electricity purchase quantity is required to be balanced by means of real-time market, and the load aggregator predicts electricity price, load and outdoor temperature at time sections in the further according to current real-time electricity price, load and outdoor temperature; and an optimal dispatching model is established with minimum electricity purchase cost adopted as a target function and charging and discharging power of a storage battery adopted as decision-making variables, so that charging and discharging can be re-arranged for the storage battery, and the behaviors of the load aggregator in the real-time market can be optimized.

Description

technical field [0001] The invention belongs to the application technology of central air-conditioning loads in the electric power market, and specifically relates to the optimal dispatching strategy of load aggregators and the energy storage characteristics of air-conditioning loads. Background technique [0002] Air-conditioning loads account for a large proportion of power equipment terminals, with flexible dispatching methods and great potential to participate in system operation, making them an important demand response resource. The air-conditioning load has heat storage capacity, and through reasonable control methods, it can quickly respond to system scheduling and provide excellent energy storage services for the system. Load aggregator is a business model specially used to integrate load-side resources. It can not only participate in the power market on behalf of small and medium-sized load resources, but also can measure and control loads in real time with the hel...

Claims

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Application Information

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IPC IPC(8): G06Q10/04
Inventor 宋梦高赐威
Owner SOUTHEAST UNIV
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